CHEM 103 Module 3 Exam Portage Learning Questions and Verified Answers,100% Guaranteed Pass

CHEM 103 Module 3 Exam Portage Learning
Questions and Verified Answers,100% Guaranteed Pass


CHEM 103

MODULE: 3 2025/2026



Question 1

Click this link to access the Periodic Table. This may be helpful throughout the
exam.



A reaction between HCl and NaOH is being studied in a styrofoam coffee cup
with NO lid and the heat given off is measured by means of a thermometer
immersed in the reaction mixture. Enter the correct thermochemistry term to
describe the item listed.



1. The type of thermochemical process


2. The amount of heat released in the reaction of HCl with NaOH



1. Heat given off = Exothermic process


2. The amount of heat released = Heat of reaction



Question 2
Click this link to access the Periodic Table. This may be helpful throughout the
exam.




1. Show the calculation of the final temperature of the mixture when a
22.8 gram sample of water at 74.6oC is added to a 14.3 gram sample of water at
24.3oC in a coffee cup calorimeter.

, c (water) = 4.184 J/g oC



2. Show the calculation of the energy involved in freezing 54.3 grams of
water at 0oC if the Heat of Fusion for water is 0.334 kJ/g


1. - (mwarn H2O x cwarn H2O x ∆twarn H2O) = (mcool H2O x ccool H2O x ∆tcool H2O)